MBT-50/Armoured Recovery VehicleInformation
The MBT-50/ARV as stated by the name utilises the MBT-50's chassis, however with a superstructure mounted on top instead of a rotating turret. The ARV has a crew of two, a driver and gunner, who operates a gun mount through a hatch, the gun mount usually mounts a standard 7.62mm machine gun and is the only armament of this vehicle. The vehicle has a crane on the rear and a winch on the front for lifting stuck/broken down vehicles.

The driver can drive the vehicle either inside using their small windscreen or standing up through the roof hatch...
...as shown here.

120mm Static MortarInformation
Used alongside infantry or can be carried in a specially adapted APC-30 and act as mobile fire support.

Black Sea.C Assault Ship
This assault ship is capable of carrying 8 landing craft and a maximum of 400 troops. Armed with a 105mm turret and several small arms mounts.
Also up to two Ark light helicopters can land to the bow of the ship.

The recovery vehicle is by far the best thing here. While the other two creations are somewhat mediocre, you really nailed both the ARV's style and functionality making it by far the best thing here and (in my oppinion) one of your better creations overall.